Apparatus for manufacturing metal tubes



(N0 Model.)

E. F. HARTSHORN. APPARATUS TOR MANUFACTURING METAL TUBES. No. 479,507.

Patented July 26, 1892.

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EDMUND F. HARTSHORN, OF NEWARK, ASSIGNOR TO STEVART HARTS- HORN, OF SHORT HILLS, NEV JERSEY.

APPARATUS FOR MANUFACTURING METAL TUBES.

SPECIFICATION forming part of Letters Patent No. 422,507, dated July 6, 1892. Application filed .Tune l0, 1891. Serial No. SQQQS. (N0 model.)

T0 @ZZ whom it may concern:

Beit known that I, EDMUND F. HARrsHonN, of Newark, county of Essex, and State of New Jersey, have invented a new and useful Improvenient in Apparatus for Manufacturing Metal Tubes, of which the following is a specification.

My improvement relates more particularly to apparatus used in the manufacture of tin shade-rollers, but is equally applicable for all metal tubes; and it consists of a support to hold the tube in position while it is being soldered or joined.

Figure l is a side elevation, partly in section, of my apparatus. Fig. 2 is a plan view,

and Fig. 3 is a detailed section view.

In manufacturing metal shade-rollers it is often very desirable to join several small sections of tubes together to form the desired length of roller.

The object of my apparatus is to hold the sections in place and together while being soldered.

A is a long iron or metal tube of an outside diameter less than the diameter of the shaderoller, held and supported at one end by the standards s s, so as to readily turn in the latter. Near the middle or outer end of the tube is a support T, having a V-shaped top, on which the roller rests as it is being soldered. The outer or free end of the tubeAis formed by the sections a, preferably four in number, which are capable of springing or moving outward, so as to increase the diameter of the tube at the end.

In the particular construction shown in the drawings the end sections a are made separate from the tube and are connected to the latter by the narrow tongues 0.2, which are fastened to the tube by the bolts b. These narrow strips or tongues d2 have sufficient spring to allow the sectionsa to open or move apart when pressed outward and to bring the sections back into their normal position when the pressure is removed. The inner faces a of the sections a are beveled or inclined from the end inward, as shown in Figs. l and 3. I do not wish to conne myself to this particular form of the end sections on, as they may be constructed in various ways.

Within the hollow tube A is a rod C, ar-

ranged to slide back and forth in the tube. The outer end of this rod within the movable sections a has a cone-shaped head c, the sides c of which correspond with the beveled inner faces a" of the ends a. As will be understood from the drawings, when the rod is pushed out toward the free end of the tube, the head c lies Within the angular space formed by the beveled inner faces a of the end sections a, and these latter sections remain in their normal position. vAs the rod C is drawn inward the head c, sliding against the beveled inner faces a', spreads or forces the sections a apart, as shown in Fig. 3, and thus increases the diameter of the tube at the point of application. The rod C is drawn back and forth in the tube by the arm D, operated by the rod E and 1ever F. The arm D, which is pivoted to the bracket z' on the standard S, is connected at one end d to the rod E and at the other end terminates in the yoke d d, the ends of which are secured to the loose collar g, sliding on the rod C. On each side of the loose collarg are fixed collars-h h', fastened to the rod C and moving with the latter. As the arm D turns in either direction on its pivot the collar g, attached to its end, is brought in contact with one of the fixed collars h or h on either side, and pressing against the latter moves the rod C in the corresponding direction in the tube A. By means of this arrangement of the loose collar g, secured and held in the yoke on the arm D, and of the fixed collars h and h', moving with the rod C, the latter rod is readily moved back and forth and at the same time is free to turn around with the tube A in the process of soldering the roller. Thev rod E is moved by the lever F, pivoted to the iioor at a point convenient to the operator.

The mode of operating my apparatus is as follows: The rod C is pushed out so the head c lies at the end of the tube and the end sections da are in their normal positions, as shown in Fig. 1. The section of the roller is then slipped over and along the tube A and over the support T until the end of the roller is arrested by the adjustable stop L, which is secured to the tubeat such a point that the outer end of the roller will be in position on the movable sections a a. The other section of the roller is then slipped over the end of IOO able end sections a a. The handle of the lever F is then drawn toward the operator, which causes the rod E to turn the arm D so as to bring the loose collar g against the xed collar h and draw the rod C and the head c back within the tube. The head in passing within the tube opens out or expands the ends aa, as above described, and presses the same against the interior of the two sections of the roller, thus holding the latter firmly in place and in contact with each other. The joint between the sections is then soldered or united, the tube A, together with the head c and rod C, turning around to bring all parts of the joint in position before the operator. After the two sections are soldered or completely joined the lever F is moved back, bringing the collar g against the other fixed collar h', and thus pushing the rod C and head c out and allowing the end sections a a to assume their normal positions, when the roller is at once released and may be withdrawn from the tube.

described.

What I claim is- 1. In an apparatus for soldering shade-rollers, in combination, the tube A, supported at one end and near the middle and adapted to turn in its bearings, provided with the expansible ends a a, the rod C, having the conical head c engaging the expansible ends, and means for moving and.l holding the rod within the tube at any position, whereby the ends are caused to expand and are held fixed at any degree of expansion, substantially as described.

2. In combination, the tube A, adapted to turn in its bearings and provided with the expansible ends a a, the rod C, having the conical head c engaging the expansible ends, and the fixed collars h h', the pivoted arm D, engaging at one end with the loose collar g and at the other end with the rod E, and the rod E, arranged to be moved by the lever F, substantially as and operating in the manner EDMUND F. IIARTSHORN.

Witn esses:

V. T. WILSON, FRED S. KEMPER. 

